PIC16F1508TESSQTO datasheet(132/384 Pages) MICROCHIP

132 / 384 page

PIC16(L)F1508/9

DS41609A-page 132

Preliminary

 2011 Microchip Technology Inc.

13.3

FVR Control Registers

TABLE 13-2:

SUMMARY OF REGISTERS ASSOCIATED WITH THE FIXED VOLTAGE REFERENCE

FVRCON: FIXED VOLTAGE REFERENCE CONTROL REGISTER

R/W-0/0

R-q/q

R/W-0/0

FVREN

FVRRDY(1)

TSEN

TSRNG

CDAFVR<1:0>

ADFVR<1:0>

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

q = Value depends on condition

bit 7

FVREN:

Fixed Voltage Reference Enable bit

1 = Fixed Voltage Reference is enabled

0 = Fixed Voltage Reference is disabled

bit 6

FVRRDY:

Fixed Voltage Reference Ready Flag bit(1)

1 = Fixed Voltage Reference output is ready for use

0 = Fixed Voltage Reference output is not ready or not enabled

bit 5

TSEN:

Temperature Indicator Enable bit(3)

1 = Temperature Indicator is enabled

0 = Temperature Indicator is disabled

bit 4

TSRNG:

Temperature Indicator Range Selection bit(3)

1 =VOUT = VDD - 4VT (High Range)

0 =VOUT = VDD - 2VT (Low Range)

bit 3-2

CDAFVR<1:0>:

Comparator Fixed Voltage Reference Selection bits

11 = Comparator Fixed Voltage Reference Peripheral output is 4x (4.096V)(2)

10 = Comparator Fixed Voltage Reference Peripheral output is 2x (2.048V)(2)

01 = Comparator Fixed Voltage Reference Peripheral output is 1x (1.024V)

00 = Comparator Fixed Voltage Reference Peripheral output is off

bit 1-0

ADFVR<1:0>:

ADC Fixed Voltage Reference Selection bit

11 = ADC Fixed Voltage Reference Peripheral output is 4x (4.096V)(2)

10 = ADC Fixed Voltage Reference Peripheral output is 2x (2.048V)(2)

01 = ADC Fixed Voltage Reference Peripheral output is 1x (1.024V)

00 = ADC Fixed Voltage Reference Peripheral output is off

Note 1:

FVRRDY is always ‘1’ for the PIC16F1508/9 devices.

Fixed Voltage Reference output cannot exceed VDD.

See Section 14.0 “Temperature Indicator Module” for additional information.

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

on page

FVRCON

FVREN

FVRRDY

TSEN

TSRNG

CDAFVR>1:0>

ADFVR<1:0>

132

Legend:

Shaded cells are unused by the Fixed Voltage Reference module.

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